A constant temperature delivery case

Abstract

The utility model discloses a constant temperature distribution box relates to vegetables distribution technical field, aims at solving when distribution box is placed in outside environment, and the cold storage agent in the box can gradually melt, leads to heat to be unable to be delivered to the cold source depth efficiently, finally leads to the whole constant temperature performance to be not good, effective fresh -keeping time shortening's problem. Its technical scheme main points are: including the box with the side plate, the fixed connection with having a plurality of exhaust holes's fixed sheet of box inner wall, is installed between fixed sheet and the fan of box bottom. The utility model discloses a fan, gas pipe, the setting of heat conduction sheet, to this realizes the effect of the air in the box to carry out self -circulation, exports the hot gas in the box and converts into the cold gas again and then sends back to the box, realizes the temperature in the box always keeps low -temperature state, improves the constant temperature effect of distribution box, improves the fresh -keeping time of vegetables.

Description

Technical Field

[0001] This utility model relates to the field of vegetable delivery technology, and more specifically, to a constant temperature delivery box. Background Technology

[0002] With the rapid development of fresh food e-commerce and modern agriculture, consumers are increasingly demanding higher quality from fresh produce such as vegetables. In the "last mile" delivery process from farm to table, stable temperature control inside the delivery box is crucial to ensuring the freshness of vegetables and reducing spoilage.

[0003] Currently, most commercially available vegetable delivery boxes employ passive cooling solutions, such as placing pre-frozen ice packs or cold-storage phase change material sheets inside the box. While these solutions are simple in structure and low in cost, they suffer from technical problems in practical applications, particularly regarding the stability and durability of temperature control. Specifically, when the delivery box is placed in an external environment (such as a delivery vehicle in high summer temperatures or outdoors), the cold-storage refrigerant inside continuously absorbs heat from the outside and gradually melts. During this melting process, a liquid layer forms around the solid core, acting as an "insulation layer" and significantly reducing the heat exchange efficiency between the air inside the box and the solid cold source core. This results in heat not being efficiently transferred to the depths of the cold source, causing the air temperature inside the box to be much higher and more unstable than the temperature of the cold source core, ultimately leading to poor overall temperature control and a shortened effective preservation time.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a constant temperature delivery box, which solves the problem that when the delivery box is placed in the external environment, the refrigerant inside the box will gradually melt, resulting in the inefficient transfer of heat to the depth of the cold source, ultimately leading to poor overall constant temperature performance and shortened effective preservation time.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a constant temperature delivery box, including a box body with side panels, a fixing plate with several exhaust holes fixedly connected to the inner wall of the box body, a fan installed between the fixing plate and the bottom of the box body, an air inlet and an air outlet respectively opened at the top and side walls of the box body at the fan, the air inlet and the air outlet are connected by an air supply pipe, several heat-conducting plates are fixedly connected inside the air supply pipe, several through holes are opened on the heat-conducting plates, a cooling assembly for cooling the heat-conducting plates is provided on the box body, and a power supply for powering the fan is installed between the fixing plate and the bottom of the box body.

[0007] The present invention is further configured such that: the cooling assembly includes a connecting frame fixedly connected to the side wall of the box, a heat-conducting plate fixedly connected inside the connecting frame, the heat-conducting sheet passing through the connecting frame and fixedly connected to the heat-conducting plate, a refrigeration box containing ice cubes is placed inside the connecting frame, and the side wall of the refrigeration box and the heat-conducting plate are in contact with each other.

[0008] The present invention is further configured such that a handle is fixedly connected to one side of the refrigeration box.

[0009] The present invention is further configured such that the gas delivery pipe is arranged in a serpentine shape.

[0010] The present invention is further configured such that the through holes on two adjacent heat-conducting plates inside the gas pipeline are arranged in an alternating pattern.

[0011] The present invention is further configured such that: a support frame is slidably connected to the fixed plate, and several placement plates for placing vegetables are fixedly connected to both sides of the support frame.

[0012] The present invention is further configured such that a slide rail for the support frame to slide is fixedly connected to the fixing plate.

[0013] In summary, this utility model has the following beneficial effects: By incorporating a fan, air pipes, and heat-conducting plates, the air inside the box is self-circulated. Hot air is output from the box, converted into cold air, and then returned to the box, maintaining a consistently low temperature inside. This improves the temperature control of the delivery box, extends the freshness of vegetables, and allows the fan to blow the cold air accumulated at the bottom of the box back into the box, resulting in a more even distribution of cold air and further enhancing the preservation of vegetables. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 A cross-sectional view of this utility model Figure 1 ; Figure 4 A cross-sectional view of this utility model Figure 2 ; Figure 5 A cross-sectional view of this utility model Figure 3 .

[0015] In the diagram: 1. Side panel; 2. Cabinet; 3. Exhaust vent; 4. Fixing plate; 5. Fan; 6. Air inlet; 7. Air outlet; 8. Air supply pipe; 9. Heat-conducting plate; 10. Through hole; 11. Connecting frame; 12. Heat-conducting plate; 13. Cooling box; 14. Handle; 15. Support frame; 16. Placement plate; 17. Slide rail; 18. Power supply. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0017] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] A type of temperature-controlled delivery box, such as Figures 1-5 As shown, the enclosure includes a box 2 with a side plate 1. A fixing plate 4 with several exhaust holes 3 is fixedly connected to the inner wall of the box 2. A fan 5 is installed between the fixing plate 4 and the bottom of the box 2. An air inlet 6 and an air outlet 7 are respectively opened at the top and side wall of the box 2 at the fan 5. The air inlet 6 and the air outlet 7 are connected by an air supply pipe 8. Several heat-conducting plates 9 are fixedly connected inside the air supply pipe 8. Several through holes 10 are opened on the heat-conducting plates 9. A cooling assembly for cooling the heat-conducting plates 9 is provided on the box 2. A power supply 18 for powering the fan 5 is installed between the fixing plate 4 and the bottom of the box 2.

[0020] When using the delivery box to deliver vegetables, rotate the side panel 1 to open the box 2, then place the vegetables into the box 2 and close it. The power supply 18 then drives the fan 5 to rotate, and the air blown out enters the box 2 through the exhaust port 3. At this time, the hot air inside the box 2 is affected by the wind and enters the air supply pipe 8 through the air inlet 6, where it comes into contact with several heat-conducting plates 9. The heat-conducting plates 9 absorb the heat from the hot air, converting it into cold air, which is then delivered to the air outlet 7 through the through-hole 10. Air is delivered between the fixed plate 4 and the bottom of the box 2, and the cold air is blown back into the box 2 by the fan 5, thereby achieving the effect of self-circulation of the air in the box 2. The hot air in the box 2 is output and converted into cold air and then delivered back into the box 2, so that the temperature inside the box 2 is always kept at a low temperature, improving the constant temperature effect of the delivery box and extending the freshness time of vegetables. At the same time, the setting of the fan 5 can blow the cold air deposited at the bottom of the box 2 back into the box 2, making the cold air distribution in the box 2 more even, further improving the freshness of vegetables.

[0021] Furthermore, the gas supply pipe 8 is arranged in a serpentine shape, which can extend the delivery time of hot gas in the gas supply pipe 8 and further improve the cooling effect of hot gas. The through holes 10 on the two adjacent heat-conducting plates 9 located in the gas supply pipe 8 are arranged in an alternating manner, which can increase the contact area between hot gas and heat-conducting plates 9 and improve the heat absorption effect of heat-conducting plates 9 on hot gas.

[0022] like Figures 1-5 As shown, the cooling assembly includes a connecting frame 11 fixedly connected to the side wall of the housing 2. A heat-conducting plate 12 is fixedly connected inside the connecting frame 11. A heat-conducting sheet 9 passes through the connecting frame 11 and is fixedly connected to the heat-conducting plate 12. A refrigeration box 13 containing ice is placed inside the connecting frame 11. The side wall of the refrigeration box 13 is in contact with the heat-conducting plate 12. A handle 14 is fixedly connected to one side of the refrigeration box 13, which facilitates the insertion and removal of the refrigeration box 13 from the connecting frame 11.

[0023] Before using the delivery box, open the refrigeration box 13 and fill it with water. Then close the refrigeration box 13 and freeze it. After the water freezes into ice, place it into the connecting frame 11 so that the side wall of the refrigeration box 13 and the heat-conducting plate 12 come into contact with each other. At this time, the ice in the refrigeration box 13 will release cold energy, which the heat-conducting plate 12 can absorb and transfer to the heat-conducting sheet 9, thereby achieving the effect of cooling the heat-conducting sheet 9.

[0024] like Figures 1-5As shown, a support frame 15 is slidably connected to the fixing plate 4. Several placement plates 16 for placing vegetables are fixedly connected to both sides of the support frame 15. This can prevent the vegetables from bumping into each other and allow the cold air at the bottom to be blown into the box 2 better. A slide rail 17 for the support frame 15 to slide is fixedly connected to the fixing plate 4, which can improve the stability of the support frame 15 when it moves.

[0025] The usage process of this utility model is as follows: When delivering vegetables using the delivery box, the refrigerated box 13, filled with ice, is placed inside the connecting frame 11 and makes contact with the heat-conducting plate 12. Then, the side panel 1 is rotated to open the box 2. The vegetables are then placed inside the box 2, and the box 2 is closed. The power supply 18 then drives the fan 5 to rotate, and the air it blows enters the box 2 through the exhaust port 3. At this time, the hot air inside the box 2 is affected by the wind and enters the air supply pipe 8 through the air inlet 6, making contact with several heat-conducting plates 9 inside the air supply pipe 8. The heat-conducting plates 9 then ignite the heat in the air. The heat is absorbed and converted into cold air. At the same time, the cold air is released through the refrigeration box 13, which can cool the heat-conducting plate 9. Then, the cold air is delivered to the air outlet 7 through the through hole 10, and delivered between the fixed plate 4 and the bottom of the box 2. The cold air is then blown back into the box 2 by the fan 5, thereby achieving the effect of self-circulation of the air in the box 2. The hot air in the box 2 is output, converted into cold air, and then delivered back into the box 2, so that the temperature inside the box 2 is always kept at a low temperature, improving the constant temperature effect of the delivery box and increasing the freshness time of vegetables.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A thermostatic delivery box comprising a box (2) with side panels (1), characterised in that: The inner wall of the box (2) is fixedly connected to a fixing plate (4) with several exhaust holes (3). A fan (5) is installed between the fixing plate (4) and the bottom of the box (2). An air inlet (6) and an air outlet (7) are respectively opened at the top and side wall of the box (2) at the fan (5). The air inlet (6) and the air outlet (7) are connected through an air supply pipe (8). Several heat-conducting plates (9) are fixedly connected inside the air supply pipe (8). Several through holes (10) are opened on the heat-conducting plates (9). A cooling component for cooling the heat-conducting plates (9) is provided on the box (2). A power supply (18) for powering the fan (5) is installed between the fixing plate (4) and the bottom of the box (2).

2. A constant temperature delivery case according to claim 1, wherein: The cooling assembly includes a connecting frame (11) fixedly connected to the side wall of the housing (2), a heat-conducting plate (12) fixedly connected inside the connecting frame (11), a heat-conducting sheet (9) passing through the connecting frame (11) and fixedly connected to the heat-conducting plate (12), a refrigeration box (13) containing ice is placed inside the connecting frame (11), and the side wall of the refrigeration box (13) and the heat-conducting plate (12) are in contact with each other.

3. A constant temperature delivery case according to claim 2, wherein: A handle (14) is fixedly connected to one side of the refrigeration box (13).

4. The constant temperature delivery case of claim 1, wherein: The gas pipeline (8) is arranged in a serpentine pattern.

5. A constant temperature delivery case according to claim 1, wherein: The through holes (10) on two adjacent heat-conducting plates (9) inside the gas pipe (8) are arranged alternately.

6. A constant temperature delivery case according to claim 1, wherein: A support frame (15) is slidably connected to the fixed plate (4), and several placement boards (16) for placing vegetables are fixedly connected to both sides of the support frame (15).

7. A constant temperature delivery case according to claim 6, wherein: The fixed plate (4) is fixedly connected to a slide rail (17) for the support frame (15) to slide.

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